﻿namespace DLLCS
{
    public class DLL_CS
    {
        public static int Add(int a, int b)
        {
            return a + b;
        }

        public static int Multi(int a, int b)
        {
            return a * b;
        }

        public static int Factorial(int a)
        {
            int temp = 1;
            for (int i = 1; i <= a; i++) temp *= i;
            return temp;
        }
    }
}